人民黄河2024，Vol.46Issue(6)：109-112,4.DOI:10.3969/j.issn.1000-1379.2024.06.018
西吉县2022年"7·15"暴雨重力侵蚀调查与建议
Investigation and Consideration on Gravity Erosion During July 15,2022 Rainstorm in Xiji County
摘要
Abstract
On July 13-16,2022,a heavy rainfall occurred in the middle reaches of the Yellow River.Severe disaster caused by local heavy rainfall in Xiji County,Ningxia on July 15.In order to scientifically evaluate the damage of soil and water loss and the role of soil and water conservation engineering caused by this heavy rainfall,the Soil and Water Conservation Monitoring Center of the Ministry of Water Resources promptly organized an investigation.The gravity erosion special investigation used a combination of drone image interpretation and on-site ver-ification to obtain the location,area and erosion amount of gravity erosion in five typical small watersheds in Tangjiahe watershed of Xiji County.The statistics and analysis of the survey results show that this heavy rainfall has caused 120 gravity erosion in five small watersheds,including 85 collapses,29 landslides and 6 debris flows,mainly in newly built terraces,roads and grassland.The gravity erosion intensity of the rainstorm is 300-1 500 t/km2.One of the reasons for serious gravity erosion is the low standard of construction of water and soil conserva-tion engineering measures and incomplete supporting facilities system.Suggestions are put forward to appropriately improve the construction standards of soil and water conservation projects,pay attention to the protection of terraced fields and ridges,and strengthen the construction of road and ditch drainage facilities.关键词
重力侵蚀/水土保持工程/无人机影像解译/唐家河流域/西吉县Key words
gravity erosion/soil and water conservation engineering/unmanned aerial vehicle image interpretation/Tangjia River Basin/Xiji County分类
农业科技引用本文复制引用
高健健,党维勤,周子渊,李旭强..西吉县2022年"7·15"暴雨重力侵蚀调查与建议[J].人民黄河,2024,46(6):109-112,4.基金项目
国家自然科学基金黄河水科学联合基金重点支持项目(U2243227) （U2243227）
水利部重大科技项目(SKS-2022092) （SKS-2022092）
